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# This benchmark hits the GetRegisteredClassNodes as much as possible with one registration

import polyglot
import sys
from java.util import List, ArrayList

@polyglot.interop_type(List)
class JList:
    def append(self, value):
        self.add(value)

    def __getitem__(self, item):
        return self.get(item)

    def get_value(self):
        sum = 0
        for i in range(self.length()):
            sum += self[i]
        return sum

    def length(self):
        return self.size()


# igv: function_root_create_list_at
def create_list(num: int, l: JList):
    for i in range(num):
        l.append(ArrayList())
        for j in range(i):
            l[i].append(j)

    for i in range(num):
        li = l[i]
        assert li.length() * (li.length() - 1) / 2 == li.get_value()

def measure(num):
    j_list = ArrayList()
    create_list(num, j_list)

def __benchmark__(num=2_000):
    measure(num)

if __name__ == '__main__':
    __benchmark__(int(sys.argv[1]))
